Chapter 5 Guided Reading Flashcard

Front

Concentration gradient

Back

A difference in the amount of a substance across a distance.

Front

Osmosis

Back

The diffusion of water across a selectively permeable membrane.

Front

Transport work

Back

The type of cellular work where a cell pumps certain ions against their concentration gradient to maintain those gradients.

Front

Diffusion

Back

The movement of a substance from high to low concentration.

Front

Energy conservation principle

Back

Energy is never created or destroyed; it can only be transformed from one form to another.

Front

Heat energy

Back

The energy that is released or absorbed during a physical or chemical process, often resulting from energy transformations.

Front

Selectively permeable membrane

Back

A membrane that allows certain substances to pass through while blocking others.

Front

Passive transport

Back

The movement of substances across a cell membrane without the use of energy, typically along a concentration gradient.

Front

Active transport

Back

The movement of substances against their concentration gradient, requiring energy, often in the form of ATP.

Front

Equilibrium

Back

A state in which the concentrations of a substance are equal across a space, resulting in no net movement.